Simplification and equivalence method for dense exhaust film holes for nickel-based single crystal turbine blades

• Main Authors: MAO QIANZHU, ZHANG YAMIN, YUE ZHUFENG, WEN ZHIXUN, YANG LIU, ZHANG XUHUI
• Format: Patent
• Language: Chinese; English
• Published: 01.02.2019
• Subjects: CALCULATING; COMPUTING; COUNTING; ELECTRIC DIGITAL DATA PROCESSING; PHYSICS

The invention discloses a simplification and equivalence method for dense exhaust film holes of nickel-based single crystal turbine blades, belonging to the technical field of structural reliability analysis and optimization design. The method for solving the structural failure probability determines a blade plate model according to the arrangement mode of the dense exhaust film holes of the blade, and simplifies the blade plate model into an equivalent single-hole model; dividing the equivalent single hole model into a plane stress state region and a generalized plane strain state region according to the thickness difference of the equivalent single hole model; according to the stress-strain relationship of the blade plate model and the equivalent single-hole model, the expressions of theequivalent elastic constants of the equivalent single-hole model under the plane stress state and the generalized plane strain state are derived. The simplified and equivalent method can calculate the stress and strain field